Commented javascript code

Shared/Article Rendering/main.js

@@ -1,11 +1,20 @@
+// These mouse functions are used by NetNewsWire for Mac to display link previews
 function mouseDidEnterLink(anchor) {
 	window.webkit.messageHandlers.mouseDidEnter.postMessage(anchor.href);
 }
-
 function mouseDidExitLink(anchor) {
 	window.webkit.messageHandlers.mouseDidExit.postMessage(anchor.href);
 }
 
+// Add the mouse listeners for the above functions
+function linkHover() {
+	document.querySelectorAll("a").forEach(element => {
+		element.addEventListener("mouseenter", function() { mouseDidEnterLink(this) });
+		element.addEventListener("mouseleave", function() { mouseDidExitLink(this) });
+	});
+}
+
+// Here we are making iframes responsive.  Particularly useful for inline Youtube videos.
 function wrapFrames() {
 	document.querySelectorAll("iframe").forEach(element => {
 		var wrapper = document.createElement("div");
@@ -15,19 +24,15 @@ function wrapFrames() {
 	});
 }
 
+// Strip out all styling so that we have better control over layout
 function stripStyles() {
 	document.getElementsByTagName("body")[0].querySelectorAll("style, link[rel=stylesheet]").forEach(element => element.remove());
 	document.getElementsByTagName("body")[0].querySelectorAll("[style]").forEach(element => element.removeAttribute("style"));
 }
 
-function linkHover() {
-	var anchors = document.getElementsByTagName("a");
-	for (var i = 0; i < anchors.length; i++) {
-		anchors[i].addEventListener("mouseenter", function() { mouseDidEnterLink(this) });
-		anchors[i].addEventListener("mouseleave", function() { mouseDidExitLink(this) });
-	}
-}
-
+// Add the playsinline attribute to any HTML5 videos that don't have it.
+// Without this attribute videos may autoplay and take over the whole screen
+// on an iphone when viewing an article.
 function inlineVideos() {
 	document.querySelectorAll("video").forEach(element => {
 		element.setAttribute("playsinline", true)
@@ -41,6 +46,7 @@ function error() {
 function render(data) {
 	document.getElementsByTagName("style")[0].innerHTML = data.style;
 	document.body.innerHTML = data.body;
+	
 	window.scrollTo(0, 0);
 	
 	wrapFrames()